Heart Disease (3 of 3) (IMAGE) University of Manchester Caption This image shows a "super-tubule" (cyan) compared with a healthy t-tubule (pink). Credit The University of Manchester Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.